JP3306089B2 - Safety equipment for small boats - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a small boat, and more particularly to a safety device for preventing an accident involving a propeller and protecting a propeller.

[0002]

2. Description of the Related Art In recent years, with the rapid spread of marine sports, sports using small boats such as motor boats,
For example, water skiing, parasails, and the like are becoming popular.

[0003] In the above-mentioned water skiing and parasail, the rope is extended from the back of the small boat, the small boat is advanced with the competitor connected to the tip of the rope, and the competitor is moved on the water surface or in the air via the rope. It is towing.

[0004] The small boat is also generally used as a transport means for transporting divers performing scuba diving to a diving spot.

[0005]

As described above, when a small boat is used as a water skiing or parasail pulling means, at the end of the competition, the athlete floating on the water surface is lifted from the water surface to the ship, and I need to take them home.

[0006] Also during scuba diving, it is necessary to end the diving, pull up the diver floating on the surface of the water onto the ship, and take it back to the port.

[0007] However, in order to lift a competitor or diver on the water surface onto a ship, it is necessary to bring a small boat close to the competitor or diver.

However, at this time, the small boat has a shallow draft, and of course, the propelling propeller mounted on the boat also has
The propeller was in a shallow place under the water, and when the athlete or diver was lifted, the propeller contacted the athlete or diver, which was extremely dangerous if a maneuvering error occurred.

In particular, in the case of a small boat equipped with an outboard motor, the propeller protrudes greatly behind the hull,
Furthermore, competitors and divers on the surface of the water climb up from behind the ship, and it is very dangerous to make a mistake in maneuvering at this point.

[0010] However, no safety measures have been taken in conventional small vessels to cope with the above-mentioned troubles.

[0011]

Means for Solving the Problems A front surface is open, and the other part is a box shape having a mesh or lattice shape, and the inside size is set to a size that can completely cover a propeller mounted on a small boat. A safety cover disposed on the outer periphery of the propeller, fins for receiving a water flow protruding outwardly of the safety cover from both sides of the safety cover, and a fin located above the propeller and supporting the safety cover with the propeller. A safety device having a fulcrum for movably supporting the vehicle rearward is mounted on a small boat.

[0012]

As described above, on the outer periphery of the propeller of a small boat,
By arranging a safety device composed of a net-like or lattice-like box body, it is possible to prevent an athlete or a diver from getting into the propeller.

[0013]

1 to 3 show a safety device (1) according to the present invention.
Is provided in an outboard motor (B) attached to a small boat (A).

In FIG. 1, (2) is a bracket fixed to a position above the propeller (D) of the housing (C) forming the outer shape of the outboard motor (B), and (3) is A shaft for supporting a later-described safety cover (6) rotatably supported above the propeller (D) by the bracket (2).

The bracket (2) includes a first bracket (2a) fixed to a housing (C) of the outboard motor (B), and a second bracket (2) extending rearward from the first bracket (2a). 2b)
The shaft (3) passes through a pipe (4) supported by the second bracket (2b), and a housing (4) extends from the center of the pipe (4).
The third bracket (5) that contacts the outer periphery of (C) is extended.

(6) is a safety cover supported by the shaft (3).

As shown in FIG. 3, the safety cover (6) is open at the front and the bottom, and the other part is in the form of a box having a lattice shape. The inner dimensions of the safety cover (6) are the same as those of the propeller (D). It is sized to completely cover both sides, top and back.

As shown in FIGS. 1 and 2, the safety cover (6) is supported by the shaft (3) by an arm portion (FIG. 1) extending upward from both sides of the front surface of the safety cover (6). 7) This is performed by fixing the tip of (7) to the end of the shaft (3).

On both sides of the front surface of the safety cover (6), fins (8) extending toward the outer peripheral direction of the safety cover (6) are provided.
(8) is formed so as to be integral with the safety cover (6).

Further, at the center of the upper surface of the safety cover (6),
When the safety cover (6) hangs vertically downward by its own weight with the shaft (3) as a fulcrum, it comes into contact with a part of the housing (C) of the outboard motor (B), and the safety cover (6) moves forward ( A stopper (9) is provided to prevent the rear surface of the safety cover (6) from coming into contact with the propeller (D), which is prevented from rotating toward the right side in FIG. 1).

A small boat (A) having an outboard motor (B) equipped with the safety device (1) having the above structure is anchored and a propeller (D)
When the rotation of the motor is stopped, the safety cover (6) hangs down by its own weight until the stopper (9) comes into contact with the housing (C) of the outboard motor (B), and the safety cover (6) cover
(6) is located.

In this state, when the outboard motor (B) is started, and the propeller (D) is rotated to advance the small boat (A), the water flow generated by the forward movement is generated by the safety cover (6). The safety cover (6) tries to rotate toward the upper rear part of the outboard motor (B) with the shaft (3) as a fulcrum.

When the ship speed rises above a predetermined value,
The force of the water flow hitting the fins (8) and (8) exceeds the weight of the safety cover (6), and the safety cover (6) jumps backward as shown in FIG. At this time, the safety cover (6) prevents the resistance.

In this state, the boat speed is reduced in order to lift the competitors and divers on board, and when the small boat (A) approaches the competitors and divers, the fins (8) of the safety cover (6)
Since the flow velocity of the water flow hitting (8) decreases, the safety cover (6) turns downward by its own weight, returns to the state of FIG. 1, and the propeller (D)
The safety cover (6) is located on the outer periphery of the vehicle.

Therefore, even if a maneuvering mistake is made at this point,
The area around the propeller (D) is guarded by the safety cover (6), so there is no need to worry about competitors or divers getting involved in the propeller (D).

When maneuvering for approaching a competitor or diver, the propeller (D) is reversed, and when the small boat (A) is moved backward, the fins (8) (8) of the safety cover (6) are , Because the force that presses the safety cover (6) against the propeller (D) works.
The safety cover (6) is also located on the outer periphery of the propeller (D),
It surely prevents competitors and divers from getting caught in the propeller (D).

Although the above embodiment has been described with respect to an example in which the portion of the safety cover (6) covering the propeller (D) is formed in a lattice shape, this portion may be formed in a net shape.

As the rotating means of the safety cover (6), as described above, in addition to using the shaft (3), a link mechanism having a fulcrum above the propeller (D) may be used. Good.

Further, in the above-described embodiment, an example has been described in which the safety cover (6) is rotatably supported.
However, if it is used in places where there are always many divers and swimmers, place the safety cover (6) fixedly on the outer periphery of the propeller (D), and in any state, the outer periphery of the propeller (D) The safety cover (6) may be located at the front end so as to reliably prevent the entanglement accident.

[0030]

As described above, if the safety device according to the present invention is mounted on a small boat, the small boat is brought close to the competitor or diver when the small boat approaches the competitor or diver in order to lift the competitor or diver to the small boat. Since the safety cover is located on the outer periphery of the ship's propeller, even if a maneuvering mistake is made at this point, there is no need to worry about athletes or divers getting involved in the propeller, and at the same time, the ropes that led the athlete No more worrying about getting caught in the propeller

Further, since the safety cover is located around the propeller even when the vehicle is traveling backwards where it is difficult to check backward, it is possible to prevent the propeller from contacting the reef and being damaged, and also preventing the propeller from contacting another ship in the bay. it can.

Further, when the small boat is propelled at high speed, the safety cover jumps up behind the propeller, so that the safety cover does not become a resistance during high-speed propulsion.

Further, since the turning operation of the safety cover according to the ship speed is performed only by the action of the weight of the safety cover and the flow of water, the structure is very simple, and there is no fear of incurring an operation error. .

[Brief description of the drawings]

FIG. 1 is a side view showing an example in which a small boat safety device according to the present invention is mounted on an outboard motor.

FIG. 2 is a front view showing an example in which the outboard motor is equipped with the safety device for small boats according to the present invention.

FIG. 3 is a perspective view showing a safety cover according to the present invention.

FIG. 4 is a side view showing a state in which the safety cover has jumped up to the rear of the propeller.

[Explanation of symbols]

 A Small boat D Propeller 1 Safety device for small boat 3 Shaft 6 Safety cover 8 Fin

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B63H 5/16 B63H 21/26

Claims (1)

(57) [Claims] 1. A front face is open, and the other part is a box shape having a mesh or lattice shape. The inner size is set to a size that can completely cover a propeller mounted on a small boat. A safety cover arranged on the outer periphery, fins for receiving a water flow protruding outward from the both sides of the safety cover toward the outside of the safety cover, and a safety cover located above the propeller and facing the rear of the propeller And a fulcrum for movably supporting the boat.